Effects of foliar application of salicylic acid and nitric oxide in alleviating iron deficiency induced chlorosis of Arachis hypogaea L.

Botanical Studies

Table 2 Effects of exogenous SA and NO on chl a, chl b, car, chl a+b and chl a/b of peanut

Treatments	Chl a(mg g^-1FW)	Chl b(mg g^-1FW)	Carotenoids *x.c*(mg g^-1FW)	Chl *a+b*(mg g^-1FW)	Chl *a/b*
CK	1.15 ± 0.010f	0.46 ± 0.003d	0.19 ± 0.010b	1.62 ± 0.010f	2.49 ± 0.022b
EDTA-Fe	1.22 ± 0.003e	0.48 ± 0.002c	0.20 ± 0.009ab	1.70 ± 0.005e	2.51 ± 0.008ab
SA	1.26 ± 0.001d	0.50 ± 0.004bc	0.20 ± 0.011ab	1.76 ± 0.005d	2.53 ± 0.018ab
SNP	1.29 ± 0.011c	0.51 ± 0.020b	0.21 ± 0.028ab	1.79 ± 0.025c	2.55 ± 0.098ab
SA+SNP	1.39 ± 0.006a	0.54 ± 0.004a	0.24 ± 0.011a	1.93 ± 0.004a	2.58 ± 0.031a
1/2(SA+SNP)	1.35 ± 0.005b	0.53 ± 0.003a	0.22 ± 0.032a	1.88 ± 0.002b	2.56 ± 0.023ab

CK: hydroponic systems; EDTA-Fe: Hoagland nutrient solution containing 0.1 mM EDTA-Fe; SA: hydroponic systems and foliar application of 1.0 mM SA; SNP: hydroponic systems and foliar application of 2.5 mM SNP; SA+SNP: hydroponic systems and foliar application of 1.0 mM SA and 2.5 mM SNP; 1/2(SA+SNP): hydroponic systems and foliar application of 0.5 mM SA and 1.25 mM SNP. Different lower case letters in the same line indicate a significant difference (P < 0.05) between different treatments. Data are means ± SD of three replicate samples per treatment.